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><H1
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>DROP USER MAPPING</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN71836"
></A
><H2
>Name</H2
>DROP USER MAPPING&nbsp;--&nbsp;remove a user mapping for a foreign server</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN71841"
></A
><H2
>Synopsis</H2
><PRE
CLASS="SYNOPSIS"
>DROP USER MAPPING [ IF EXISTS ] FOR { <TT
CLASS="REPLACEABLE"
><I
>user_name</I
></TT
> | USER | CURRENT_USER | PUBLIC } SERVER <TT
CLASS="REPLACEABLE"
><I
>server_name</I
></TT
></PRE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71845"
></A
><H2
>Description</H2
><P
>   <TT
CLASS="COMMAND"
>DROP USER MAPPING</TT
> removes an existing user
   mapping from foreign server.
  </P
><P
>   The owner of a foreign server can drop user mappings for that server
   for any user.  Also, a user can drop a user mapping for his own
   user name if <TT
CLASS="LITERAL"
>USAGE</TT
> privilege on the server has been
   granted to the user.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71851"
></A
><H2
>Parameters</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
><TT
CLASS="LITERAL"
>IF EXISTS</TT
></DT
><DD
><P
>      Do not throw an error if the user mapping does not exist.  A
      notice is issued in this case.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>user_name</I
></TT
></DT
><DD
><P
>      User name of the mapping.  <TT
CLASS="LITERAL"
>CURRENT_USER</TT
>
      and <TT
CLASS="LITERAL"
>USER</TT
> match the name of the current
      user.  <TT
CLASS="LITERAL"
>PUBLIC</TT
> is used to match all present and
      future user names in the system.
     </P
></DD
><DT
><TT
CLASS="REPLACEABLE"
><I
>server_name</I
></TT
></DT
><DD
><P
>      Server name of the user mapping.
     </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71872"
></A
><H2
>Examples</H2
><P
>   Drop a user mapping <TT
CLASS="LITERAL"
>bob</TT
>, server <TT
CLASS="LITERAL"
>foo</TT
> if it exists:
</P><PRE
CLASS="PROGRAMLISTING"
>DROP USER MAPPING IF EXISTS FOR bob SERVER foo;</PRE
><P></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71878"
></A
><H2
>Compatibility</H2
><P
>   <TT
CLASS="COMMAND"
>DROP USER MAPPING</TT
> conforms to ISO/IEC 9075-9
   (SQL/MED).  The <TT
CLASS="LITERAL"
>IF EXISTS</TT
> clause is
   a <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> extension.
  </P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN71884"
></A
><H2
>See Also</H2
><A
HREF="sql-createusermapping.html"
>CREATE USER MAPPING</A
>, <A
HREF="sql-alterusermapping.html"
>ALTER USER MAPPING</A
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